Abstract
Physical processes determining the excitation of RF electromagnetic fields in a plasma column in a magnetic field are analyzed. The Alfvén resonance plays an important role at frequencies close to the ion cyclotron frequency. It leads to the enhancement of the RF electric field and transformation of Alfvén oscillations with a predominantly transverse polarization of the electric field into lower hybrid ones, which have a significant longitudinal component of the electric field. Lower hybrid oscillations efficiently interact with electrons causing their heating. Difficulties in the implementation of ion cyclotron resonance heating by the magnetic beach method are outlined. The processes considered in this work can be important for the VASIMR plasma engine.
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Original Russian Text © A.V. Timofeev, 2014, published in Fizika Plazmy, 2014, Vol. 40, No. 1, pp. 3–16.
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Timofeev, A.V. On the influence of Alfvén resonance on ion cyclotron resonance heating. Plasma Phys. Rep. 40, 1–13 (2014). https://doi.org/10.1134/S1063780X14010103
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DOI: https://doi.org/10.1134/S1063780X14010103